Vakoun Bayo added a third late on as the holders comfortably sealed their place in the quarter-finals.

The draw, which took place after the tie, gave Celtic a trip to St Johnstone in the last eight.

The Miracle at Broadwood of 2006 was never likely to be repeated and, despite the best efforts of a howling wind to disrupt the spectacle, Celtic produced a dominant, professional display without really hitting the heights they can.

Clyde started brightly in front of a packed crowd, with neither side threatening either goalkeeper in the initial stages. Gradually, Celtic began to stretch their hosts and the breakthrough arrived in style.

Ntcham, whose goalscoring threat, passing range and strength were evident throughout the first half, gathered on the angle of the box, cut back and fired a crisp shot across Clyde goalkeeper David Mitchell into the far corner. A goal of great technique on his 24th birthday, it gave Celtic the platform they sought.

Ryan Christie fizzed one from distance narrowly wide before a sensational move released Patryk Klimala through on goal. He looked certain to score on his first start but Mitchell raced from his line to produce a magnificent save.

The crucial second arrived when Ntcham did well to force a corner. Klimala managed to flick it towards the front post where captain Brown outmuscled his opponent to poke home.

Celtic camped in Clyde's half for much of the second period without breaching the opposition too often. Christie did clip the bar in the dying stages before Moritz Bauer found space and squared for substitute Bayo who slotted home.

Credit to the hosts, they were far from embarrassed, put on a creditable show and almost nicked a late consolation through David Goodwillie, who perhaps ought to have squared for Ally Love to tap in.

The game meant much more to Clyde than what happened on the pitch and they were not overrun as Lennon's squad took another step closer to retaining the trophy.

Clyde manager Danny Lennon:"The simplicity in the way Celtic plays is very good, and I thought they had a very good disciplined performance. We more than matched them in the second-half, but quality is always going to come through."

Celtic assistant manager John Kennedy:"We felt comfortable, it was a controlled game - the boys were professional. We'd have liked to have scored more goals but Clyde defended well and stayed in a good shape."